ckedit4是没有图片上传功能的，单我们可以通过配置 config.js 文件来设置图片上传的接口，然后结合后端程序实现图片上传。本文讲解CKEditor4结合php实现上传图片功能的方法。
配置 config.js 文件
找到ckeditor目录下的config.js文件，添加两个配置
config.extraPlugins = 'uploadimage' config.filebrowserImageUploadUrl = '/api/UploadImg/upload.php' //filebrowserImageUploadUrl 替换成你需要上传的接口
我们点击图片按钮时候，便发现弹窗中多了上传的tag界面 ，里面有选择文件按钮，可以上传图片到服务器，也就是会把file文件发送到上面设置的filebrowserImageUploadUrl接口。
upload.php 后端处理文件
TIPS：
1、ckedit4需要返回的json文件处理后续操作，使用json_encode；
2、$_REQUEST["ckCsrfToken"]是ckedit4需要的；
3、做了文件格式验证和文件大小处理；
4、文件名uniqid唯一处理。
<?php
$callback = $_REQUEST["ckCsrfToken"];
$list=array("uploaded"=>'0','callback'=>$callback);
$upaddress = "/uploads/allimg/".strftime("%Y%m",time())."/";
echo upload();
function upload(){
global $list,$upaddress;
$callback = $_REQUEST["ckCsrfToken"];
$extensions = array("jpg","bmp","gif","png");
$allowed_types = ['image/jpeg', 'image/png', 'image/gif'];
$uploadFilename = $_FILES['upload']['name'];
$uploadFilesize = $_FILES['upload']['size'];
$uploadFiletype = $_FILES['upload']['type'];
$extension = pathInfo($uploadFilename,PATHINFO_EXTENSION);
if(is_uploaded_file($_FILES['upload']['tmp_name']) && $uploadFilesize < 1024*300 && in_array($uploadFiletype, $allowed_types) && in_array($extension,$extensions)){
$uploadPath = $_SERVER['DOCUMENT_ROOT'].$upaddress;
if(!file_exists($uploadPath))
{
mkdir($uploadPath,0777,true);
}
$uuid = str_replace('.','',uniqid("",TRUE)).".".$extension;
$desname = $uploadPath.$uuid;
$tag = move_uploaded_file($_FILES['upload']['tmp_name'],$desname);
$list['uploaded']=1;
$list['fileName']=$uuid;
$list['url']=$upaddress.$uuid;
return json_encode($list);
}else{
$list['error']="文件类型不对或文件太大!";
return json_encode($list);
}
}
?>
